Apparatus for the recovery of fats or the like.



No. 700,056. I Patgnted May 13, I902.

4 C. KREMER.

APPARATUS FOR THE RECOVERY OF FATS OR THE LIKE.

(Application filed Aug. 26, 1901.) (No Model.) 3 Sheets-Sheet I.

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No. 700,056. Pate nted May I3, I902.

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APPARATUS FOR THE RECOVERY OF FATS OR THE LIKE.

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N0. 700,056. Patented May l3, I902.

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APPARATUSFOB THE RECOVERY OF FATS OR THE LIKE.

(Application filed Aug. 26, 1901.) (Nb ModeL) 3 Sheets-Sheet 3,

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U ITED STATES PATENT, @FFICE.

CHRISTOPH KREMER, OF VVIESBADEN,GERMANY.

APPARATUS FOR THE RECOVERY OF FATS OR THE LIKE.

SPECIFICATION forming part of Letters Patent No. 700,056, dated May 13,1902.

Application filed August 26,1901. Serial No. 73,292. (No model.)

To 00% whom, it may concern:

Be it known that I, OHRIsrorH KREMER, a

subject of the King of Prussia, residingat.

Wiesbaden, in the Kingdom of Prussia, Germany, have invented certain newand useful Improvements in Apparatusfor the Recovery of Fats or theLike, of which the following is a specification.

This invention relates to apparatus for the sel into which it is beingpoured; but if the communication between the vessels is below the levelof the fat no fat will pass into the communicating vessels in whichthelevel of the water will rise correspondingly. If the walls of thevessels communicating with the vessel into which the fat is poured benot higher than the level of the water therein, the water thereinwilloverfiow when fat is poured into one vessel having a higher wallthan the others, and the Weight of water overflowing the sides of thecommunicating vessels Will be equal to that of the fat poured into thereceiving vessel. Now if instead of fluid fat water mixed with fat forinstance, dish-waterbe poured into the tall vessel the result will bethe same. The fat contained in the dish-water will rise to the surfaceof the vessel into which the dish-water has been poured, and the waterfreed from fat will pass to and run over the walls of the communicatingvessel or vessels, provided the former be lower than the latter.

In carrying out my invention I cause water containing fat and-the like,such as dish-water, to flow upwardly into a vessel communicating withone or more other vessels, separating the fat in the vessel into whichthe dish-water has been poured, and drawing ofi the water freed from thefat into one or more vessels communicating with the first vessel .insuch a manner that the water before it escapes must rise in the vvesselor vessels communlcating with the first vessel.

The apparatus requires a very small space cleaning of the apparatus.

and requires no attention, except for the very easy removal of the fatand the periodical The fat has time to set, so as to form a disk or cakewhich can be easily removed. Further, as the fat congeals in aposition'of rest the fine oils used largely in hotels and otherestablishments can be conveniently recovered,because they will be foundinclosed as drops in the rigid fat. This recovery of fine oils isfacilitated by the fact that the specific gravity thereof is betweenthose of the various kitchen fats.

In the accompanying drawings, which illustrate my invention, Figure 1 isa Vertical sectional elevation of the apparatus. Fig. 2 is a transversesection thereof just above the channel 0; and Fig. 3 is a detailvertical sec- ;tion ,th ereof, illustrating a filter at the bottom ofthe inner vessel.

In said drawings, a is the vessel for the reception of the dish-water. bis avessel communicating with the former and surrounding it, so as toleave an annular space of about five centimeters between the walls.

I In order to prevent the formation of a strong current in the vessel atoward the vessel with which it communicates and in the latter vesseltoward the overflow, the two vessels communicate with each other aroundthe whole periphery of the inner vessel, and the escape or overflowof-the water takes place around the whole peripheryof the vessel b.

When the pipe for feeding the dish-Water is of about six-centimeterinterior diameter, hardly any perceptible current is caused in thevessel a. The overflow of the water over the wall of the vessel 6 takesplace into a channel 0', which is inclined so that all water is carriedto the pipe d, which carries the same to the sewer-pipe or other exit.

As shown in the drawings, the admission of the dish-water takes placefrom the side, not from the top. Otherwise'suchfat as has a tendency todescend might be carried down Ward and even into the sewer when thedishwater flows in rather quickly. The dish-water is therefore admittedthrough the side, and it rises from a gradually-widening pipe 6 in thecenter f of the vessel (1.. Thus the fat is caused to rise not only byits less specific gravity, but also by the pressure of the head of waterand the tendency of the water ICO to rise when still warm. However, caremust be taken that this admission through the side does not take placeat too lowa level, because then particles of fat could be carried awayinto the vessel 12 and overflow into the exitpipe. It is thereforeadvisable to admit the dish-water in the upper part of the vessel a, andregard must be had to the length of time within which the fat will becollected and to the amount of fat which will thus accumulate. Forinstance, if a cake of fat of from five to eight centimeters thicknessis likely to be formed the admission may suitably take place from twelveto fifteen centimeters be low the level g. In consequence of theadmission of the dish-water, as described, the layer of fat is notdisturbed. The fat can therefore congeal from the top and inclose thefine oils. The gradual widening of the admission-tube e is designed tofacilitate the passage of the drops of fat accumulating at h duringperiods of non-operation through the tube to the vessel (1. While thefat accumulates at the surface of the water in the vessel a during theadmission of dish-Water into the vessel (1, the solid particlescontained in the latter descend and accumulate at the bottom, thecurrent toward the overflow being weak.

A number of analyses have shown that this deposit at the bottomcontains, after the water has been removed by draining or pressing, fromthree to ten per cent. of protein, four to nine per cent. of fat, andfive to fifteen per cent. of extracts free of nitrogen, besides saltsand spices of value particularly regarding digestive properties. Thisdeposit can therefore be advantageously collected as food for animalsforinstance, by the arrangement of a filter-plate h at a suitable part ofthe bottom of the vessel, as indicated in Fig. 3. Of course my apparatusis also applicable to the treatment of other liquids I carrying fat forthe removal and recovery of the latter.

WVhat I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. In an apparatus for separating fats from liquids, the combination ofan outer vessel, an inner vessel therein open at bottom, an overflow forthe outer vessel below the top of the inner vessel, and an infeed-pipeleading laterally through the walls of both vessels and opening into theinner vessel below the water-level, substantially as described.

2. In an apparatus for separating fats from liquids, &c., thecombination of an outer vessel, an overflow-channel at the upper endthereof, a cylindrical open-ended vessel within the outer vessel, butseparated from the walls thereof and rising above the overflowchannel,an inlet-pipe opening into the inner vessel below the water-leveltherein, and an overflow-pipe from said channel, substantially asdescribed.

3. In an apparatus for separating fats from liquids, the combination ofthe outer vessel having an annular overflow-channel around its top, andan overflow-pipe from said channel, a cylindrical vessel located withinthe outer vessel open at bottom and extending above the outer vessel,and an infeed-pipe arranged below the channel and passing laterallythrough both vessels and opening upwardly into the inner vessel belowthe waterlevel thereof, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

JEAN GRUND, CARL GRUND.

